As a freelance mercenary with the backing of House Corrino and the Imperial Sardaukar, you must dedicate your life to furthering the goals of the House and the Sardaukar. This often involves the elimination of members of rival Houses, their citizenry, and the like.
True to Sardaukar form, you are allowed to choose an arch enemy race every 75 guild levels. Once chosen, you will be properly educated in the chosen race. Their faults, their strengths, their techniques and their silly lifestyles. You are then encouraged to use this knowledge in dominating, and if need be, exterminating this race. Your additional knowledge about the race will give you advantages when dealing with them, in combat or otherwise.
The current races available to choose from are: